Max-Forth and user autostart

[Han-earl]

Once a user autostart word has been installed on a NMIN-0021, is it possible to recover/revert to the Max-Forth interpreter?

[RMDumse]

In a non-expanded HC11 application, such as with the NMIN-0021 it is not possible to put another memory in way of the autostart to catch it, so to clear out a program, the whole internal flash must be wiped out. The DOS program WIPE35 from our web site will do the wiping for you. You change the mode jumpers to special boot, and the software downloads a small program to wipe out the flash. Follow the on screen instructions.

[nmitech]

The WIPE35 program can be downloaded here,
http://www.newmicros.com/download/wipe35.zip

The Wipe35 program is an old Dos based program, it does not work on most computers with 500mHz or faster. Here is another option, you can download a HCload window program trial version here,
http://www.microsyl.com/hcload/hcload.html
Here is a quick instruction how to erase the internal eeprom with HCload program.

- Jumper ModA & ModB for Bootstrap mode. On J6 both jumpers on center pins to the left toward to R2, assuming you have NMIN-0021A.
- Run the HCload program, and click on Comm Port tab to select your current serial port that you are working on, then press the reset button. It will say READY and You will see the green traffic light lits.
- Click on Eeprom tab, and click on Erase button and wait for the Erased message pop up.
- Close the HCload program completely
- Restore the jumpers modA & modB for single chip mode
- Run your Terminal Program and Reset the NMIN-0021A, start from fresh

Next time, Remember to use the temporary autostart, $A44A or install a back door to exit to FORTH interpreter within your program just in case you don't want to use WIPE35 or HCLOAD program.

[Han-earl]

Next time, Remember to use the temporary autostart, $A44A or install a back door to exit to FORTH interpreter within your program just in case you don't want to use WIPE35 or HCLOAD program

Thanks for the info. I haven't actually installed an autostart yet, but guessed that the backdoor option would be a good way out...

Thanks.